Warm air circulating and filtering apparatus



H. A. PHAIL.

WARM AIR CIRGULATING AND'FILTERING APPARATUS Filed Sept. 16, 1952 ATTORNEY. Y

Patented Dec.h 14, t1937 A I UNITED STATES PATE-livrv oFF-ICE WARM AIR CIRCULATING AND FILTBING APPARATUS j Herman A. Phan, River Bouge, Mich.

application September 16, 1932, Serial No. 633,500

2- Claims. (Cl. 230-128) I Y My invention relates to a new and useful imfecting the air passed therethrough. By having provement in a .Warm air circulating device this layer 38 in a moist condition it assists the adapted for use primarily on warm air heating element 31 considerably in removing solid parsystems and has for its object, the provision of a ticles and lint from the air passed therethrough. 5 device wherein the circulating of air maybe With this apparatus mounted in the inlet 5 eihciently carried on. K l openings of the wall in the furnaceall of the4 Another object of the invention is the proviair entering the furnace is purified by being freed sion in a device of this class of a blower or fan from solid `particles of foreign material and dishousing so constructed and arranged that it may infected so that a sanitary condition is arrived at.

be easily and quickly assembled and disassembled. I provide a housing having an inclined top 42 l0 Another object of the invention is the proviprovided with the slitted openings 43 formed by sion, in a device of this class having a blower or the louvres 43' which are stationary. This top fan housing, of a plurality of baille plates so that is provided with the inwardly turned portion 44 the air drawn to the housing maybe drawn into which is doubled upon itself as at 45'and angularthe housing through various ports or openings, ly turned as at 46 to provide,l in conjunction with 15 the baiiie plates serving to equalize the-suction the supporting bracket 41, a support for filter tr-ansmitted to the various openings. elements which may be positioned below the open- Other objects will appear hereinafter. ing 43 and in the path of the incoming air. The invention consists in the combination and This housing is provided at one corner with arrangement of parts hereinafter describedand .the vertically extending plate 43 having the in- 20 claimed. wardly projecting portion 49 lying parallel with The invention win be4 best understood by a 'the inwardly projecting portion 50 of a similar reference to the accompanying drawing which plate 48'. The inwardly projecting portion 50 is form a part of this specification and in which, angularly turned to provide the portion 5l which Fig..1 is aperspective view of a furnace emprojects inwardly toward and is in alignment with 25 bodying the invention. the portion 5| on the plate portion 49. A grid Fig. 2 is a sectional View taken on line 2-2 52 is positioned betweenv the shoulder forming of Fig. 1 and further indicated as to location by portions 53 and 64 of the plates 48 and 4I'. Each `the section line 2 2 of Fig. 3. of these plates 48 and 48 is provided at oneend :in Fig. 3 is a sectional view taken on line 3-3 of with the inwardly projecting flange 55 engaged in 30 Fig. 2. a channel 56 formed in the plate 56' which cor- Flg. 4 is a perspective view of a baftle'element `responds in structure closely, to the structure of used in the invention. the plates 48 and 48'. On the plate 56' is the In the drawing I have illustrated the invenengagement portion 51 against which engages :z5 tion used as a warm air furnace having an air one side of the grid 58, the other sidev engaging 3;,

chamber i2'. In a plurality of the walls l2 of the vportion 63 on the plate 82 which is inwardly the furnace I provide openings i3 over. which is turned as at 6| to lie in alignment with the por,- placed a grid or covering I4. tion 60 turned inwardly from the plate El... The

In each of the openings I provide a purifying plate 62 is angularly turned, as at 64, and bolted element consisting of a tubular frame 34 which or otherwise suitably secured tothe wall 65 of 40 is split on its inner sides and the inner-ends 35 the furnace. The plates 5I and 62 serve to form. and 3S are extended parallel to provide a gripping -in conjunction with the connecting platesl 46| and portion between which may be gripped a suitable 52 a frame for reception of the lter elements filtering element 31 formed from a wire mesh positioned therein.A

screen or the like. An absorbent .layer 33, pref-A In the wall 65 is formed an opening 83 com- 45 erably formed from fabric, is secured in engagey municating with the warm air chamber l2 and ment with the ltering element 31 by means of through which 'a blast of air is directed by the the semi-circular clip 39 which is adapted to clip blower or fan 61 driven by the electric motor 68. around the frame 34. This clip 39 carries the In 'ordinary p heating installations this motorv portion iii which lies in engagement with the may, if desired, be controlled by a suitable ther- 50 layer 3U whichv is provided with the teeth di mostatic switch which has'not been illustratedas punchedtherefrom adapted topenetrate the layer the formation forms no part of the present in- 3tl and project into the lter element 31. When venti'on and is of a construction which is well the layer 33 is saturated with a suitable antiknown. The inwardly turned portions 5I and 56 septic it serves as a gerrnicidal agent for disin 5l' and 53 and 6l serve as supports for baffling 55 and 10 having the ends doubled upon themselves to provide channels 1| and 'l2 which may slip over the inwardly turned portions 5| and 5|' as shown in Fig. 3. Positioned between these plates 69 and inclined to the vertical 'are the baille plates 13 which rest upon the supporting members -14 and 'I5 and are provided with the flange 16. As shown in Fig. 3 these baule plates taper toward their inward ends and the purpose of this arrangement is that the air drawn into the housing by the blower or fan may be equalized for the various inlet openings. Experience has shown that unless the baiile plates are arranged, mounted, and constructed in this manner, a greater volume of air will be drawn inwardly of the housing from, one side than from the other. But, since the area of these sides is substantially the same and since it is desirable that all of the fllter elements be called upon to function while the blower is operating, it is quite important that uniform distribution of air entry at the various opening sides of the housing be effected. To this end the arrangement and formation of the bailles is especially directed. 1

The plates 56' and 48 are secured together by suitable bolts |64 as are likewise the crossing plates at the opposite corners. It is believed obvious from the description given that the device may be shipped in a knocked down condition and the various parts readily and quickly assembled into the position. In operation when the' blower or fan construction is mounted, the device will function in the usual manner as a natural draft system when the fan is not operated.

The simplicity of the device is believed evident from the description given and it affords a comelements embodying opposltely disposed walls 69 pact structure in which the various round cold air ducts, and round warm air pipes in a warm air heating system may be eliminated.

While I have illustrated and described the preferred form of my invention vI do not wish to limit myself to the precise details of structure shown but desire to avail myself of such variations and modifications as may come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a device of the class described, a blower or fan housing comprising corner supporting members; inwardly projecting anges on each of said supporting members; a pair of side walls: a baille plate carried by and positioned between said side walls; and a channel carried by each of said side walls slidable over said flanges for retaining said baiiie plates projecting inwardly from one of -said openings.

2. In a device of the class described a housing having plurality of inlet openings on diierent sides thereof, .an upstanding inwardly directed.

ange at opposite sides of each of said openings; a baiile construction comprising a pair of oppositely disposed walls spaced apart and' converging relatively to each other, the ends of said Walls at the divergent ends being doubled upon themselves and embrace the ilanges at opposite sides of an opening; a plurality of spaced supporting bars on the inner surface of each of said walls inclined to the horizontal, corresponding bars on opposite 'walls being in alignment; and a baille plate positioned on each pair of corresponding bars. y

HERMAN A. PHAIL. 

